Park CH, Chang HS, Oh BR, Kim HJ, Sul CK, Chung SK, Jung SI. Efficacy of low-dose tamsulosin on lower urinary tract symptoms suggestive of benign prostatic hyperplasia : a nonblind multicentre korean study. Clin Drug Investig. 2004;24(1):41–7. doi: 10.2165/00044011-200424010-00005. PMID: 17516689.